Question

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na jutro zad 8 z zalacznika

Answer 1

a)

Pc = 2Pp + Pb

Pc = 2*  16π + 8π * 8

Pc = 32π+64π

Pc = 96π

 

b)

Pc = 2* 25π + 10π * 10

Pc = 50π + 100π

Pc = 150π

 

c)

x - średnica

r - promień

sin45° = x/5√2

√2/2 = x / 5√2

2x = 10

x = 5

x = 2r

r = 2,5 

 

5² + b² = (5√2)²

25 + b² = 50

b = 5

 

Pc = 12,5π + 25π

Pc = 37,5π

Answer 2

a)

Pp=pi*4^2=16pi

2pi*r=8pi

Pb=ab=8pi*8=64pi

Pc=2*16pi+64pi=96pi

b)

Pp=pi*5^2=25pi

2pi*r=10pi

Pb=ab=10pi*10=100pi

Pc2*25pi+100pi=150pi

c)

Pp=pi*5^2=25pi

2pi*r=10pi

Pb=ab=10pi*5=50pi

Pc=2*25pi+50pi=100pi